
The new variables \(T_k\)  can be identified
with coupling constants of the non-equivariant
Gromov-Witten theory [1]}, [2]}, [3]}.
In the language of fermions, (REF )
amount to relations of the form
\(&\langle s|\exp \left(\sum _{k=1}^\infty T_kJ_{ka}\right)g_0|s\rangle = \langle s|g_0\exp \left(\sum _{k=1}^\infty T_kJ_{-kb}\right)|s\rangle \\&= \langle s|e^{J_a/a}\exp \left(\sum _{k=1}^\infty T_kP_k\right)Q^He^{J_{-b}/b}|s\rangle ,\) 
